Propelling apparatus for boats



(No Model.)

A. BUCK & A. BUROKARD.

PROPELLING APPARATUS FOR BOATS.

No. 388,395. Patented Aug. 28, 1888.

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arms are turned.

UNITED STATES PATENT OF ICE.

ALFRED BUCK AND AUGUSTUS BURCKARD, OF BALTIMORE, MARYLAND.

PROPELLING APPARATUS FOR BOATS.

SPECIFICATION forming part of Letters Patent No. 388,395, dated August 28, 1888.

Application filed November 3, 1887. Serial No. 254,177. (No model.)

To all whom, it may concern:

Be it known that we, ALFRED BUCK and AUGUSTUS BUROKARD, both of the city of Baltimore and State of Maryland, have invented certain Improvements in Propelling Apparatus for Boats, of which the following is a specification.

The object of this invention,in common with others of its class, is to provide a boat with a cheap, simple, and effective apparatus for its propulsion and to obviate the necessity of employing oars, which are liable to be mislaid and which can only be used by persons skilled in rowing, as will hereinafter fully appear.

In the description of the said invention which follows reference is made to the accon1- panying drawings, forming a part hereof,and in which Figure I is an exterior side view of a boat provided with our improvements, and Fig. II a plan of the same.- Fig. III is an enlarged side view of the invention, and Fig. 1V is an edge view of Fig. III.

Similar letters of reference indicate similar parts of the invention in all the figures.

In the said drawings, A represents a boat of common construction. B B are frames adapted to vibrate on studs a, extending laterally from the sides of the boat. In the present case four vibratory frames are shown with two on each side of the boat. C0 are arms resting in sockets b in the frames B, in which, under certain circumstances hereinafter desoribed,t-hey are adapted to be turned. There are two sockets, b, in each frame, and

they are placed so as to be farther apart at the bottom than at the top. Consequently the arms are spread in a downward direction. With this arrangement the whole vibrating apparatus occupies little space at the gunwale of the boat. Collars c on the arms 0 serve to prevent an upward movement of the arms in their sockets, and a downward mo tion of the said arms is prevented by the beveled gears D, which are secured to the upper ends of the arms. In other words, the arms are confined end wise in their sockets by means of the collars c and the beveled gears D.

E E are beveled gears, one of which is situated between each pair of gears D, through the medium of which the gears D and the The gears E are each fast ened to a stem, e, the ends of which rest so as to turn in bearing-boxes f. The stem 6. is provided with a spring-handle, F, the outer end of which is fitted to engage with the frameB, which is cut away to form an opening in which the three gears are situated. The free or outer end of the spring-handle is notched and provided with projections or lips g,which guide the arm into place, as will be readily understood by reference to Fig. IV.

G G are paddles hinged to the lower ends of the arms 0, and they consist simply of plates of any form adapted for the purpose. Projections h on the paddles, in connection with similar projections t on the arms 0, prevent the vibration of the paddles except in one direction. Consequently in the vibration of the arms effected, as hereinafter described, the boat is propelled in one direction, the paddles being dragged in a horizontal position, in which they are inoperative in their backward movement.

The tops of the frames opposite to each other on opposite sides of the boat are connected by means of rods H to cranks 7c in the rotative shafts I, which have handcranks Z, whereby they are turned. These shafts are confined endwise in bearing boxes m, secured to the sides of the boat. The boat is pro pelled by merely revolving the shafts I by means of the hand-cranks, which causes a vibratory movement of the frames carrying the arms and their paddles.

To change the direction of the boat, the

springhandle is detached from one side of the frame and turned so as to connect with the other side, as will be readily understood.

We claim as our invention- In combination with a boat, a stud projecting laterally from the side thereof, a frame resting on the said stud so as to vibrate on the same, the said frame having 

